Hi Joscwy, Just so you know (because you said you're not an advanced user) extras-devel is the place where apps that are not ready for every day use are developed. So enabling extras-devel means that at any given point things might just up and break - there's no guarantee on the quality of an application in extras-devel and there's no guarantee that an update won't break things The problem you're seeing is that the barriosquare package is not correctly defining the other packages that it depends on to function. If you _really_ want to try barriosquare, try installing the "PyQt4 Full Install (PR1.2)" package first, and then try installing the barriosquare package. Cheers, Scott.